{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950641,-0.310292,0.000000,0.000000,0.173522,-0.531619,0.829018,0.000000,-0.256696,0.786438,0.561803,0.000000,-1638973.784348,5021314.408388,3563037.835583,1],    "boundingVolume": {    "region": [1.886248,0.596515,1.886346,0.596614,0.000000,11.649337]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/3/6_1391130.b3dm"}}}